In the Linux kernel, the following vulnerability has been resolved:misc: fastrpc: Fix use-after-free and race in fastrpc_map_findCurrently, there is a race window between the point when the mutex isunlocked in fastrpc_map_lookup and the reference count increasing(fastrpc_map_get) in fastrpc_map_find, which can also lead touse-after-free.So lets merge fastrpc_map_find into fastrpc_map_lookup which allows usto both protect the maps list by also taking the &fl->lock spinlock andthe reference count, since the spinlock will be released only after.Add take_ref argument to make this suitable for all callers.
No PoCs from references.
- https://github.com/fkie-cad/nvd-json-data-feeds